RE: [Xen-devel] [PATCH][HVM][SVM] Fix machine check intercept correctly

["Woller, Thomas" <thomas.woller@xxxxxxx>]

In theory the MCE that occurs in SVM partition, will be held pending
until the VMEXIT occurs, and then released when the STGI instruction is
executed, rendering any VMEXIT code non-useful.  Same as the NMI
handling.  I might be missing something here, but the do_machine_check()
will be executed in the context of the hv trap handlers immediately
after STGI instruction, so we don't want to call it twice in the vmexit
handler code.  (?)
tom 

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Keir Fraser
> Sent: Monday, October 01, 2007 11:11 AM
> To: Egger, Christoph; xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-devel] [PATCH][HVM][SVM] Fix machine check 
> intercept correctly
> 
> On 1/10/07 16:33, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote:
> 
> > Hi!
> > 
> > Attached patch fixes machine check interception for HVM guests.
> > 
> > Keir: Please apply this patch to xen-staging *and* to Xen 3.1.1
> 
> First chunk (adding TRAP_machine_check to exception 
> intercepts) is not needed as that bit is already in 
> HVM_TRAP_MASK. Also why remove the invocation of 
> do_machine_check()? That is the function that actually 
> handles the #MC.
> 
>  -- Keir
> 
> 
> 
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> 
> 



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